Temporal relational algebras supporting preferences in temporal relational databases: Definition, properties and evaluation

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Luca Anselma, Antonella Coviello, Davide Cerotti, Erica Raina, Paolo Terenziani

Published: 01 Jan 2026, Last Modified: 13 Oct 2025Inf. Syst. 2026EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: Highlights•A new relational data model and algebra for indeterminate time with preferences is introduced.•The semantics of the data model is studied.•The correctness and reducibility of the algebra is proved.•The approach is experimentally evaluated considering several parameters.•The overhead added to cope with indeterminate time and preferences is studied.